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Rule Fog Hunter

Tarn Hows - Fog Hunter - Lake District

Hawkshead, England, United Kingdom

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 85.0% Dewpoint Spread · ≤ 2.0°C Visibility · ≤ 3000.0m Wind Speed · ≤ 2.0m/s

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing
Visibility 86% failing
Wind Speed 85% failing

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread6.1°C
Visibility24134 (Clear)
Relative Humidity64%
Wind Speed1.9m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the conditions that create the Lake District's legendary atmospheric photography. We combine fog probability, dewpoint spread, visibility, and wind data to predict when and where mist will form over these famous lakes and valleys.

The Lake District's combination of lakes, tarns, and enclosed valleys creates ideal conditions for fog formation. Cool, calm nights allow mist to pool in valley bottoms, creating ethereal scenes at dawn that have inspired poets and photographers for centuries.

What makes the Lake District special for fog photography:

  • Lake mist - Cold water surfaces generate fog that pools over the lakes at dawn
  • Valley inversions - Mountain-ringed valleys trap mist while fells rise above
  • Romantic landscapes - This is Wordsworth and Turner country, with timeless views
  • Accessible locations - Well-maintained paths reach viewpoints above the fog layer

Peak fog season runs from late August through October, when temperature differentials are greatest. The best conditions typically occur on calm, clear nights when temperatures drop near dewpoint. Arrive before dawn—lake mist often lifts within an hour or two of sunrise. Higher viewpoints like Catbells or Loughrigg offer shots looking down at fog-filled valleys.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Mon, Feb 16
13:0033%0.7°C24134m4.6m/s
14:000%1.5°C24135m6.2m/s
15:000%1.8°C24135m6.1m/s
16:000%1.5°C24135m4.2m/s
17:000%1.8°C24134m3.5m/s
18:000%1.4°C24135m3.3m/s
19:0053%0.3°C1089m2.1m/s
20:000%0.1°C46m3.2m/s
21:000%0.1°C29m3.2m/s
22:000%0.9°C8819m4.1m/s
23:000%1.1°C24134m2.4m/s
Tue, Feb 17
24:000%0.8°C24134m2.2m/s
01:0060%0.9°C24134m2.5m/s
02:000%1.7°C24134m2.7m/s
03:000%1.8°C24135m3.4m/s
04:000%1.7°C24134m3.3m/s
05:000%1.5°C24134m3m/s
06:000%1.4°C24134m2.8m/s
07:000%1.9°C24134m2.9m/s
08:000%1.9°C24134m2.6m/s
09:000%2.5°C24134m1.8m/s
10:000%5°C24135m2.7m/s
11:000%5.5°C24134m3.5m/s
12:000%5.7°C24135m3.1m/s
13:000%6.1°C24134m1.9m/s
14:000%6.4°C24135m1m/s
15:000%6.1°C24135m1.6m/s
16:000%4.1°C24134m1.4m/s
17:000%2.9°C24135m1.5m/s
18:000%2.5°C24134m1.5m/s
19:000%2.5°C24134m1.4m/s
20:000%2.5°C24134m1.8m/s
21:000%2.6°C24134m1.8m/s
22:000%2.6°C24134m2.1m/s
23:000%2.5°C24134m1.8m/s
Wed, Feb 18
24:000%2.6°C24135m2.1m/s
01:000%2.9°C24134m3m/s
02:000%3.3°C24135m3.1m/s
03:000%3.2°C24135m4m/s
04:000%2.9°C24134m4.2m/s
05:000%2.8°C24135m4.2m/s
06:000%2.3°C24135m4m/s
07:000%2°C24134m4.8m/s
08:000%2°C24134m5.6m/s
09:000%2.4°C24135m6.8m/s
10:000%2.4°C24135m9m/s
11:000%2.7°C24134m10m/s
12:000%2.7°C24134m11m/s
13:000%3°C24134m11m/s
14:000%3°C24135m11m/s
15:000%3.1°C24134m11m/s
16:000%3°C24135m11m/s
17:000%2.7°C24134m11m/s
18:000%2.5°C24134m11m/s
19:000%2.6°C24134m12m/s
20:000%2.7°C24134m11m/s
21:000%2.8°C24135m11m/s
22:000%3°C24134m10m/s
23:000%3.1°C24135m9.2m/s
Thu, Feb 19
24:000%3.4°C24134m8.4m/s
01:000%3.6°C24134m8m/s
02:000%4°C24134m7.5m/s
03:000%3.8°C24134m8.6m/s
04:000%3.6°C24135m8.8m/s
05:000%3.5°C24135m8.2m/s
06:000%3.2°C24134m7.7m/s
07:000%3°C24134m7.6m/s
08:000%2.9°C24135m6.6m/s
09:000%3.2°C24135m5.4m/s
10:000%3.4°C24135m5m/s
11:000%3.7°C24135m5m/s
12:000%3.7°C24135m5.1m/s
13:000%3.5°C24134m5.2m/s
14:000%4.1°C24134m4.9m/s
15:000%3.7°C24134m3.6m/s
16:000%3°C24135m2.8m/s
17:000%2°C24134m2.1m/s
18:000%1.5°C24135m2m/s
19:000%1.6°C24135m2.7m/s
20:000%1.7°C24135m3.5m/s
21:000%1.7°C24135m4.2m/s
22:000%1.4°C17016m4.2m/s
23:0045%1°C9897m4.1m/s
Fri, Feb 20
24:0027%0.7°C2777m4.1m/s
01:0027%0.6°C2049m4.4m/s
02:0031%0.5°C1320m4.7m/s
03:0035%0.4°C592m5.1m/s
04:000%0.3°C442m5.3m/s
05:000%0.2°C293m5.5m/s
06:000%0.2°C144m5.7m/s
07:000%0.1°C134m6.2m/s
08:000%0.1°C124m6.6m/s
09:000%0.2°C115m7.1m/s
10:000%0.4°C8121m7.2m/s
11:000%0.6°C16128m7.4m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Europe/London
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Tue, Feb 17 Sunrise 07:28 Sunset 17:23
13:00
-6.4°C 0mm 64% 0cm -0.29°C 0mm 0.22kPa 3.6m/s
14:00
-6.5°C 0mm 62% 0cm -0.06°C 0mm 0.23kPa 2.4m/s
15:00
-6°C 0mm 64% 0cm 0.08°C 0mm 0.22kPa 3.6m/s
16:00
-4.4°C 0mm 74% 0cm -0.3°C 0mm 0.16kPa 1.9m/s
17:00
-4.6°C 0mm 80% 0cm -1.7°C 0mm 0.11kPa 1.3m/s
18:00 ☾
-5°C 0mm 83% 0cm -2.5°C 0mm 0.09kPa 1.4m/s
19:00 ☾
-5.1°C 0mm 83% 0cm -2.6°C 0mm 0.09kPa 1.3m/s
20:00 ☾
-5.1°C 0mm 83% 0cm -2.6°C 0mm 0.09kPa 1.6m/s
21:00 ☾
-5.1°C 0mm 82% 0cm -2.5°C 0mm 0.09kPa 1.7m/s
22:00 ☾
-5°C 0mm 82% 0cm -2.4°C 0mm 0.09kPa 4.2m/s
23:00 ☾
-4.6°C 0mm 83% 0cm -2.1°C 0mm 0.09kPa 3.1m/s
Wed, Feb 18 Sunrise 07:26 Sunset 17:25
24:00 ☾
-4.4°C 0mm 82% 0cm -1.8°C 0mm 0.1kPa 7.4m/s
01:00 ☾
-4.5°C 0mm 81% 0cm -1.6°C 0mm 0.11kPa 11m/s
02:00 ☾
-4.5°C 0mm 78% 0cm -1.2°C 0mm 0.12kPa 11m/s
03:00 ☾
-4.3°C 0mm 78% 0cm -1.1°C 0mm 0.12kPa 12m/s
04:00 ☾
-3.9°C 0mm 80% 0cm -0.97°C 0mm 0.11kPa 12m/s
05:00 ☾
-3.8°C 0mm 82% 0cm -1°C 0mm 0.11kPa 12m/s
06:00 ☾
-3.5°C 0mm 84% 0cm -1.2°C 0mm 0.09kPa 12m/s
07:00 ☾
-3.3°C 0mm 86% 0cm -1.3°C 0mm 0.08kPa 13m/s
08:00
-3.1°C 0mm 86% 0cm -1.1°C 0mm 0.08kPa 14m/s
09:00
-2.9°C 0mm 84% 0cm -0.5°C 0mm 0.09kPa 14m/s
10:00
-2.3°C 0mm 84% 0cm 0.12°C 0mm 0.1kPa 16m/s
11:00
-2.1°C 0.01mm 83% 0cm 0.56°C 0mm 0.11kPa 17m/s
12:00
-1.7°C 0mm 82% 0cm 1°C 0mm 0.12kPa 17m/s
13:00
-1.7°C 0mm 81% 0cm 1.3°C 0mm 0.13kPa 18m/s
14:00
-1.7°C 0mm 80% 0cm 1.3°C 0mm 0.13kPa 17m/s
15:00
-2.1°C 0mm 80% 0cm 1°C 0mm 0.13kPa 18m/s
16:00
-2.5°C 0mm 80% 0cm 0.47°C 0mm 0.12kPa 18m/s
17:00
-2.9°C 0mm 82% 0cm -0.2°C 0mm 0.11kPa 19m/s
18:00 ☾
-3.1°C 0mm 83% 0cm -0.57°C 0mm 0.1kPa 19m/s
19:00 ☾
-3.3°C 0mm 82% 0cm -0.65°C 0mm 0.1kPa 21m/s
20:00 ☾
-3.5°C 0mm 82% 0cm -0.75°C 0mm 0.11kPa 21m/s
21:00 ☾
-3.6°C 0mm 81% 0cm -0.75°C 0mm 0.11kPa 20m/s
22:00 ☾
-3.8°C 0mm 80% 0cm -0.83°C 0mm 0.11kPa 19m/s
23:00 ☾
-3.9°C 0mm 80% 0cm -0.78°C 0mm 0.12kPa 19m/s
Thu, Feb 19 Sunrise 07:24 Sunset 17:28
24:00 ☾
-4.1°C 0mm 78% 0cm -0.73°C 0mm 0.13kPa 18m/s
01:00 ☾
-4.2°C 0mm 77% 0cm -0.59°C 0mm 0.14kPa 17m/s
02:00 ☾
-4.3°C 0mm 75% 0cm -0.32°C 0mm 0.15kPa 17m/s
03:00 ☾
-4°C 0mm 76% 0cm -0.22°C 0mm 0.15kPa 18m/s
04:00 ☾
-3.8°C 0mm 77% 0cm -0.21°C 0mm 0.14kPa 18m/s
05:00 ☾
-3.6°C 0mm 78% 0cm -0.11°C 0mm 0.14kPa 17m/s
06:00 ☾
-3.3°C 0mm 79% 0cm -0.06°C 0mm 0.13kPa 16m/s
07:00 ☾
-3.1°C 0.01mm 80% 0cm -0.09°C 0mm 0.12kPa 15m/s
08:00
-2.9°C 0mm 81% 0cm 0.01°C 0mm 0.12kPa 14m/s
09:00
-2.7°C 0mm 79% 0cm 0.48°C 0mm 0.13kPa 13m/s
10:00
-2.2°C 0mm 78% 0cm 1.2°C 0mm 0.15kPa 12m/s
11:00
-2°C 0mm 76% 0cm 1.7°C 0mm 0.16kPa 10m/s
12:00
-1.7°C 0.01mm 77% 0cm 2°C 0mm 0.16kPa 10m/s
13:00
-1.3°C 0mm 77% 0cm 2.2°C 0mm 0.16kPa 10m/s
14:00
-1.6°C 0mm 74% 0cm 2.5°C 0mm 0.19kPa 8.8m/s
15:00
-1.3°C 0mm 77% 0cm 2.4°C 0mm 0.17kPa 7.9m/s
16:00
-1.2°C 0mm 80% 0cm 1.8°C 0mm 0.14kPa 6.9m/s
17:00
-1.6°C 0mm 87% 0cm 0.37°C 0mm 0.08kPa 2.2m/s
18:00 ☾
-2°C 0mm 89% 0cm -0.46°C 0mm 0.06kPa 1.9m/s
19:00 ☾
-2.3°C 0mm 89% 0cm -0.69°C 0mm 0.07kPa 4.5m/s
20:00 ☾
-2.6°C 0mm 88% 0cm -0.93°C 0mm 0.07kPa 7m/s
21:00 ☾
-2.9°C 0mm 88% 0cm -1.2°C 0mm 0.07kPa 9.5m/s
22:00 ☾
-2.5°C 0mm 90% 0cm -1.1°C 0.08mm 0.05kPa 9.4m/s
23:00 ☾
-2.1°C 0mm 93% 0cm -1.1°C 0.17mm 0.04kPa 9.3m/s
Fri, Feb 20 Sunrise 07:22 Sunset 17:30
24:00 ☾
-1.8°C 0mm 95% 0cm -1.1°C 0.25mm 0.03kPa 9.2m/s
01:00 ☾
-1.5°C 0.07mm 96% 0cm -0.91°C 0.38mm 0.02kPa 10m/s
02:00 ☾
-1.2°C 0.14mm 97% 0cm -0.71°C 0.5mm 0.02kPa 11m/s
03:00 ☾
-0.9°C 0.21mm 97% 0cm -0.51°C 0.63mm 0.02kPa 12m/s
04:00 ☾
-0.2°C 0.36mm 98% 0cm 0.15°C 1.3mm 0.01kPa 13m/s
05:00 ☾
0.6°C 0.51mm 98% 0cm 0.8°C 2mm 0.01kPa 15m/s
06:00 ☾
1.3°C 0.66mm 99% 0cm 1.5°C 2.8mm 0.01kPa 16m/s
07:00 ☾
2.1°C 2.1mm 99% 0cm 2.2°C 4.1mm 0.01kPa 16m/s
08:00
2.9°C 3.5mm 99% 0cm 3°C 5.5mm 0.01kPa 17m/s
09:00
3.6°C 4.9mm 99% 0cm 3.8°C 6.9mm 0.01kPa 18m/s
10:00
4.1°C 3.3mm 97% 0cm 4.5°C 8.3mm 0.02kPa 17m/s
11:00
4.6°C 1.6mm 96% 0cm 5.2°C 9.6mm 0.04kPa 16m/s
12:00
5.1°C 0.01mm 94% 0cm 5.9°C 11mm 0.05kPa 16m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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